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- /****************************************************************************
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2014 - 2021 VERISILICON
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- *****************************************************************************
- *
- * The GPL License (GPL)
- *
- * Copyright (C) 2014 - 2021 VERISILICON
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- *****************************************************************************
- *
- * Note: This software is released under dual MIT and GPL licenses. A
- * recipient may use this file under the terms of either the MIT license or
- * GPL License. If you wish to use only one license not the other, you can
- * indicate your decision by deleting one of the above license notices in your
- * version of this file.
- *
- *****************************************************************************/
- #ifdef __FREERTOS__
- #include "base_type.h"
- #include "dev_common_freertos.h"
- #include "io_tools.h"
- #elif defined(__linux__)
- #include <linux/version.h>
- #include <linux/slab.h>
- #include <linux/vmalloc.h>
- #include <linux/module.h>
- #include <linux/init.h>
- #include <linux/kernel.h>
- #include <linux/debugfs.h>
- #include <linux/types.h>
- #include <linux/device.h>
- #include <linux/pagemap.h>
- #include <linux/sched.h>
- #include <stddef.h>
- #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,10,0))
- #include <linux/dma-map-ops.h>
- #else
- #include <linux/dma-contiguous.h>
- #endif
- #include <linux/platform_device.h>
- #include <linux/mod_devicetable.h>
- #include <linux/dma-buf.h>
- #include <asm/io.h>
- #endif
- #include "hantrommu.h"
- MODULE_DESCRIPTION("Verisilicon VPU Driver");
- MODULE_LICENSE("GPL");
- #ifndef NULL
- #ifdef __cplusplus
- #define NULL 0
- #else
- #define NULL ((void *)0)
- #endif
- #endif
- /*******************************************************************************
- ***** New MMU Defination *******************************************************/
- #define MMU_MTLB_SHIFT 22
- #define MMU_STLB_4K_SHIFT 12
- #define MMU_STLB_64K_SHIFT 16
- #define MMU_MTLB_BITS (32 - MMU_MTLB_SHIFT)
- #define MMU_PAGE_4K_BITS MMU_STLB_4K_SHIFT
- #define MMU_STLB_4K_BITS (32 - MMU_MTLB_BITS - MMU_PAGE_4K_BITS)
- #define MMU_PAGE_64K_BITS MMU_STLB_64K_SHIFT
- #define MMU_STLB_64K_BITS (32 - MMU_MTLB_BITS - MMU_PAGE_64K_BITS)
- #define MMU_MTLB_ENTRY_NUM (1 << MMU_MTLB_BITS)
- #define MMU_MTLB_SIZE (MMU_MTLB_ENTRY_NUM << 2)
- #define MMU_STLB_4K_ENTRY_NUM (1 << MMU_STLB_4K_BITS)
- #define MMU_STLB_4K_SIZE (MMU_STLB_4K_ENTRY_NUM << 2)
- #define MMU_PAGE_4K_SIZE (1 << MMU_STLB_4K_SHIFT)
- #define MMU_STLB_64K_ENTRY_NUM (1 << MMU_STLB_64K_BITS)
- #define MMU_STLB_64K_SIZE (MMU_STLB_64K_ENTRY_NUM << 2)
- #define MMU_PAGE_64K_SIZE (1 << MMU_STLB_64K_SHIFT)
- #define MMU_MTLB_MASK (~((1U << MMU_MTLB_SHIFT)-1))
- #define MMU_STLB_4K_MASK ((~0U << MMU_STLB_4K_SHIFT) ^ MMU_MTLB_MASK)
- #define MMU_PAGE_4K_MASK (MMU_PAGE_4K_SIZE - 1)
- #define MMU_STLB_64K_MASK ((~((1U << MMU_STLB_64K_SHIFT)-1)) ^ MMU_MTLB_MASK)
- #define MMU_PAGE_64K_MASK (MMU_PAGE_64K_SIZE - 1)
- /* Page offset definitions. */
- #define MMU_OFFSET_4K_BITS (32 - MMU_MTLB_BITS - MMU_STLB_4K_BITS)
- #define MMU_OFFSET_4K_MASK ((1U << MMU_OFFSET_4K_BITS) - 1)
- #define MMU_OFFSET_16K_BITS (32 - MMU_MTLB_BITS - MMU_STLB_16K_BITS)
- #define MMU_OFFSET_16K_MASK ((1U << MMU_OFFSET_16K_BITS) - 1)
- #define MMU_MTLB_ENTRY_HINTS_BITS 6
- #define MMU_MTLB_ENTRY_STLB_MASK (~((1U << MMU_MTLB_ENTRY_HINTS_BITS) - 1))
- #define MMU_MTLB_PRESENT 0x00000001
- #define MMU_MTLB_EXCEPTION 0x00000002
- #define MMU_MTLB_4K_PAGE 0x00000000
- #define MMU_STLB_PRESENT 0x00000001
- #define MMU_STLB_EXCEPTION 0x00000002
- #define MMU_STLB_4K_PAGE 0x00000000
- #define MMU_FALSE 0
- #define MMU_TRUE 1
- #define MMU_ERR_OS_FAIL (0xffff)
- #define MMU_EFAULT MMU_ERR_OS_FAIL
- #define MMU_ENOTTY MMU_ERR_OS_FAIL
- #define MMU_INFINITE ((u32) ~0U)
- #define MAX_NOPAGED_SIZE 0x20000
- #define MMU_SUPPRESS_OOM_MESSAGE 1
- #if MMU_SUPPRESS_OOM_MESSAGE
- #define MMU_NOWARN __GFP_NOWARN
- #else
- #define MMU_NOWARN 0
- #endif
- #define MMU_IS_ERROR(status) (status < 0)
- #define MMU_NO_ERROR(status) (status >= 0)
- #define MMU_IS_SUCCESS(status) (status == MMU_STATUS_OK)
- #undef MMUDEBUG
- #ifdef HANTROMMU_DEBUG
- # ifdef __KERNEL__
- # define MMUDEBUG(fmt, args...) printk( KERN_INFO "hantrommu: " fmt, ## args)
- # else
- # define MMUDEBUG(fmt, args...) fprintf(stderr, fmt, ## args)
- # endif
- #else
- # define MMUDEBUG(fmt, args...)
- #endif
- #define MMU_ON_ERROR(func) \
- do { \
- status = func; \
- if (MMU_IS_ERROR(status)){ \
- goto onerror; \
- } \
- }while (MMU_FALSE)
- #define WritePageEntry(page_entry, entry_value) \
- *(unsigned int *)(page_entry) =(unsigned int)(entry_value)
- #define ReadPageEntry(page_entry) *(unsigned int *)(page_entry)
- #define DRIVER_NAME "hantroencdma"
- /* simple map mode: generate mmu address which is same as input bus address*/
- unsigned int simple_map = 0;
- /* this shift should be an integral multiple of mmu page size(4096).
- It can generate a mmu address shift in simple map mode*/
- unsigned int map_shift = 0;
- /* module_param(name, type, perm) */
- module_param(simple_map, uint, 0);
- module_param(map_shift, uint, 0);
- enum MMURegion {
- MMU_REGION_IN,
- MMU_REGION_OUT,
- MMU_REGION_PRIVATE,
- MMU_REGION_PUB,
- MMU_REGION_COUNT
- };
- struct MMUNode {
- void *buf_virtual_address;
- unsigned int buf_bus_address; /* used in kernel map mode */
- int mtlb_start;
- int stlb_start;
- int mtlb_end;
- int stlb_end;
- unsigned int page_count;
- int process_id;
- struct file* filp;
- struct MMUNode *next;
- struct MMUNode *prev;
- };
- struct MMUDDRRegion {
- unsigned long long physical_address;
- unsigned long long virtual_address;
- unsigned int page_count;
- void *node_mutex;
- struct MMUNode *simple_map_head;
- struct MMUNode *simple_map_tail;
- struct MMUNode *free_map_head;
- struct MMUNode *map_head;
- struct MMUNode *free_map_tail;
- struct MMUNode *map_tail;
- };
- struct MMU {
- void *page_table_mutex;
- /* Master TLB information. */
- unsigned int mtlb_size;
- unsigned long long mtlb_physical;
- void *mtlb_virtual;
- unsigned int mtlb_entries;
- int enabled;
- unsigned int stlb_size;
- unsigned long long stlb_physical;
- void *stlb_virtual;
- struct MMUDDRRegion region[MMU_REGION_COUNT];
- unsigned int page_table_array_size;
- unsigned long long page_table_array_physical;
- void *page_table_array;
- };
- static struct MMU *g_mmu = NULL;
- extern unsigned long gBaseDDRHw;
- unsigned int mmu_enable = MMU_FALSE;
- static unsigned int mmu_init = MMU_FALSE;
- extern unsigned int pcie;
- static unsigned int region_in_mmu_start = REGION_IN_MMU_START;
- static unsigned int region_in_mmu_end = REGION_IN_MMU_END;
- static unsigned int region_out_mmu_start = REGION_OUT_MMU_START;
- static unsigned int region_out_mmu_end = REGION_OUT_MMU_END;
- static unsigned int region_private_mmu_start = REGION_PRIVATE_MMU_START;
- static unsigned int region_private_mmu_end = REGION_PRIVATE_MMU_END;
- static const struct platform_device_info hantro_platform_info = {
- .name = DRIVER_NAME,
- .id = -1,
- .dma_mask = DMA_BIT_MASK(32),
- };
- static int hantro_drm_probe(struct platform_device *pdev)
- {
- int result;
- struct device *dev = &pdev->dev;
- (void) dev;
- (void) result;
- return 0;
- }
- static int hantro_drm_remove(struct platform_device *pdev)
- {
- struct device *dev = &pdev->dev;
- (void) dev;
- return 0;
- }
- static const struct platform_device_id hantro_drm_platform_ids[] = {
- {
- .name = DRIVER_NAME,
- },
- {/* sentinel */ },
- };
- static const struct of_device_id hantro_of_match[] = {
- { .compatible = "thead,light-vc8000e-mmu", },
- {/* sentinel */}
- };
- static struct platform_driver hantro_drm_platform_driver = {
- .probe = hantro_drm_probe,
- .remove = hantro_drm_remove,
- .driver = {
- .name = DRIVER_NAME,
- .owner = THIS_MODULE,
- .of_match_table = hantro_of_match,
- },
- .id_table = hantro_drm_platform_ids,
- };
- struct platform_device *platformdev;
- static enum MMUStatus ZeroMemory(void *memory, unsigned int bytes) {
- memset(memory, 0, bytes);
- return MMU_STATUS_OK;
- }
- static enum MMUStatus AllocateMemory(unsigned int bytes, void **memory){
- void *pointer;
- enum MMUStatus status;
- if (bytes > MAX_NOPAGED_SIZE) {
- pointer = (void*) vmalloc(bytes);
- MMUDEBUG(" *****VMALLOC size*****%d\n", bytes);
- } else {
- pointer = (void*) kmalloc(bytes, GFP_KERNEL | MMU_NOWARN);
- MMUDEBUG(" *****KMALLOC size*****%d\n", bytes);
- }
- if (pointer == NULL) {
- /* Out of memory. */
- status = MMU_STATUS_OUT_OF_MEMORY;
- goto onerror;
- }
- /* Return pointer to the memory allocation. */
- *memory = pointer;
- return MMU_STATUS_OK;
- onerror:
- /* Return the status. */
- return status;
- }
- static enum MMUStatus FreeMemory(void *memory) {
- /* Free the memory from the OS pool. */
- if (is_vmalloc_addr(memory)) {
- MMUDEBUG(" *****VFREE*****%p\n", memory);
- vfree(memory);
- } else {
- MMUDEBUG(" *****KFREE*****%p\n", memory);
- kfree(memory);
- }
- return MMU_STATUS_OK;
- }
- static enum MMUStatus SMDeleteNode(struct MMUNode **pp) {
- (*pp)->prev->next = (*pp)->next;
- (*pp)->next->prev = (*pp)->prev;
- MMUDEBUG(" *****DeleteNode size*****%d\n", (*pp)->page_count);
- FreeMemory(*pp);
- return MMU_STATUS_OK;
- }
- static enum MMUStatus DeleteNode(struct MMUNode **pp) {
- (*pp)->prev->next = (*pp)->next;
- (*pp)->next->prev = (*pp)->prev;
- MMUDEBUG(" *****DeleteNode size*****%d\n", (*pp)->page_count);
- FreeMemory(*pp);
- return MMU_STATUS_OK;
- }
- static enum MMUStatus MergeNode(struct MMUNode *h,
- struct MMUNode **pp) {
- struct MMUNode *tmp0 = h->next;
- struct MMUNode *tmp1 = h->next;
- while(tmp0) {
- /* 1th step: find front contiguous memory node */
- if(tmp0->mtlb_end == (*pp)->mtlb_start &&
- tmp0->stlb_end == (*pp)->stlb_start) {
- tmp0->mtlb_end = (*pp)->mtlb_end;
- tmp0->stlb_end = (*pp)->stlb_end;
- tmp0->page_count += (*pp)->page_count;
- DeleteNode(pp);
- MMUDEBUG(" *****first merge to front. node size*****%d\n", tmp0->page_count);
- /* after merge to front contiguous memory node,
- find if there is behind contiguous memory node */
- while(tmp1) {
- /* merge */
- if(tmp1->mtlb_start == tmp0->mtlb_end &&
- tmp1->stlb_start == tmp0->stlb_end) {
- tmp1->mtlb_start = tmp0->mtlb_start;
- tmp1->stlb_start = tmp0->stlb_start;
- tmp1->page_count += tmp0->page_count;
- MMUDEBUG(" *****second merge to behind. node size*****%d\n", tmp1->page_count);
- DeleteNode(&tmp0);
- return MMU_STATUS_OK;
- }
- tmp1 = tmp1->next;
- }
- return MMU_STATUS_OK;
- /* 1th step: find behind contiguous memory node */
- } else if(tmp0->mtlb_start == (*pp)->mtlb_end &&
- tmp0->stlb_start == (*pp)->stlb_end) {
- tmp0->mtlb_start = (*pp)->mtlb_start;
- tmp0->stlb_start = (*pp)->stlb_start;
- tmp0->page_count += (*pp)->page_count;
- DeleteNode(pp);
- MMUDEBUG(" *****first merge to behind. node size*****%d\n", tmp0->page_count);
- /* after merge to behind contiguous memory node,
- find if there is front contiguous memory node */
- while(tmp1) {
- /* merge */
- if(tmp1->mtlb_end == tmp0->mtlb_start &&
- tmp1->stlb_end == tmp0->stlb_start) {
- tmp1->mtlb_end = tmp0->mtlb_end;
- tmp1->stlb_end = tmp0->stlb_end;
- tmp1->page_count += tmp0->page_count;
- MMUDEBUG(" *****second merge to front. node size*****%d\n", tmp1->page_count);
- DeleteNode(&tmp0);
- return MMU_STATUS_OK;
- }
- tmp1 = tmp1->next;
- }
- return MMU_STATUS_OK;
- }
- tmp0 = tmp0->next;
- }
- return MMU_STATUS_FALSE;
- }
- /* Insert a node to map list */
- static enum MMUStatus SMInsertNode(enum MMURegion e,
- struct MMUNode **pp) {
- struct MMUNode *h;
- h = g_mmu->region[e].simple_map_head;
- h->next->prev = *pp;
- (*pp)->next = h->next;
- (*pp)->prev = h;
- h->next = *pp;
- MMUDEBUG(" *****insert bm node*****%d\n", (*pp)->page_count);
- return MMU_STATUS_OK;
- }
- static enum MMUStatus InsertNode(enum MMURegion e,
- struct MMUNode **pp,
- unsigned int free) {
- enum MMUStatus status;
- struct MMUNode *h, *b;
- if(free) {
- h = g_mmu->region[e].free_map_head;
- b = g_mmu->region[e].map_head;
- status = MergeNode(h, pp);
- MMUDEBUG(" *****insert free*****%d\n", (*pp)->page_count);
- if(MMU_IS_ERROR(status)) {
- /* remove from map*/
- if((*pp)->prev != NULL && (*pp)->next != NULL) {
- (*pp)->prev->next = (*pp)->next;
- (*pp)->next->prev = (*pp)->prev;
- }
- /* insert to free map */
- h->next->prev = *pp;
- (*pp)->next = h->next;
- (*pp)->prev = h;
- h->next = *pp;
- }
- } else {
- h = g_mmu->region[e].map_head;
- h->next->prev = *pp;
- (*pp)->next = h->next;
- (*pp)->prev = h;
- h->next = *pp;
- MMUDEBUG(" *****insert unfree*****%d\n", (*pp)->page_count);
- }
- return MMU_STATUS_OK;
- }
- /* Create a Node */
- static enum MMUStatus SMCreateNode(enum MMURegion e,
- struct MMUNode **node,
- unsigned int page_count) {
- struct MMUNode *p, **new;
- p = kmalloc(sizeof(struct MMUNode), GFP_KERNEL | MMU_NOWARN);
- new = &p;
- (*new)->mtlb_start = -1;
- (*new)->stlb_start = -1;
- (*new)->mtlb_end = -1;
- (*new)->stlb_end = -1;
- (*new)->process_id = 0;
- (*new)->filp = NULL;
- (*new)->page_count = 0;
- (*new)->prev = NULL;
- (*new)->next = NULL;
- /* Insert a uncomplete Node, it will be initialized later */
- SMInsertNode(e, new);
- /* return a new node for map buffer */
- *node = *new;
- return MMU_STATUS_OK;
- }
- /* Create initial Nodes */
- static enum MMUStatus SMCreateNodes(void) {
- struct MMUNode *simple_map_head;
- struct MMUNode *simple_map_tail;
- int i;
- /* Init each region map node */
- for (i = 0; i < MMU_REGION_COUNT ; i++) {
- simple_map_head = kmalloc(sizeof(struct MMUNode), GFP_KERNEL | MMU_NOWARN);
- simple_map_tail = kmalloc(sizeof(struct MMUNode), GFP_KERNEL | MMU_NOWARN);
- simple_map_head->mtlb_start = -1;
- simple_map_head->stlb_start = -1;
- simple_map_head->mtlb_end = -1;
- simple_map_head->stlb_end = -1;
- simple_map_head->process_id = 0;
- simple_map_head->filp = NULL;
- simple_map_head->page_count = 0;
- simple_map_head->prev = NULL;
- simple_map_head->next = simple_map_tail;
- simple_map_tail->mtlb_start = -1;
- simple_map_tail->stlb_start = -1;
- simple_map_tail->mtlb_end = -1;
- simple_map_tail->stlb_end = -1;
- simple_map_tail->process_id = 0;
- simple_map_tail->filp = NULL;
- simple_map_tail->page_count = 0;
- simple_map_tail->prev = simple_map_head;
- simple_map_tail->next = NULL;
- g_mmu->region[i].simple_map_head = simple_map_head;
- g_mmu->region[i].simple_map_tail = simple_map_tail;
- }
- return MMU_STATUS_OK;
- }
- static enum MMUStatus CreateNode(void) {
- struct MMUNode *free_map_head, *map_head, *p, **pp;
- struct MMUNode *free_map_tail, *map_tail;
- int i;
- unsigned int page_count;
- unsigned int prev_stlb = 0, prev_mtlb = 0;
- /* Init each region map node */
- for (i = 0; i < MMU_REGION_COUNT ; i++) {
- free_map_head = kmalloc(sizeof(struct MMUNode), GFP_KERNEL | MMU_NOWARN);
- map_head = kmalloc(sizeof(struct MMUNode), GFP_KERNEL | MMU_NOWARN);
- free_map_tail = kmalloc(sizeof(struct MMUNode), GFP_KERNEL | MMU_NOWARN);
- map_tail = kmalloc(sizeof(struct MMUNode), GFP_KERNEL | MMU_NOWARN);
- free_map_head->mtlb_start = map_head->mtlb_start = -1;
- free_map_head->stlb_start = map_head->stlb_start = -1;
- free_map_head->mtlb_end = map_head->mtlb_end = -1;
- free_map_head->stlb_end = map_head->stlb_end = -1;
- free_map_head->process_id = map_head->process_id = 0;
- free_map_head->filp = map_head->filp = NULL;
- free_map_head->page_count = map_head->page_count = 0;
- free_map_head->prev = map_head->prev = NULL;
- free_map_head->next = free_map_tail;
- map_head->next = map_tail;
- free_map_tail->mtlb_start = map_tail->mtlb_start = -1;
- free_map_tail->stlb_start = map_tail->stlb_start = -1;
- free_map_tail->mtlb_end = map_tail->mtlb_end = -1;
- free_map_tail->stlb_end = map_tail->stlb_end = -1;
- free_map_tail->process_id = map_tail->process_id = 0;
- free_map_tail->filp = map_tail->filp = NULL;
- free_map_tail->page_count = map_tail->page_count = 0;
- free_map_tail->prev = free_map_head;
- map_tail->prev = map_head;
- free_map_tail->next = map_tail->next = NULL;
- g_mmu->region[i].free_map_head = free_map_head;
- g_mmu->region[i].map_head = map_head;
- g_mmu->region[i].free_map_tail = free_map_tail;
- g_mmu->region[i].map_tail = map_tail;
- p = kmalloc(sizeof(struct MMUNode), GFP_KERNEL | MMU_NOWARN);
- pp = &p;
- switch(i) {
- case MMU_REGION_IN:
- page_count = (REGION_IN_END - REGION_IN_START + 1)/PAGE_SIZE;
- p->stlb_start = region_in_mmu_start >> 12 & 0x3FF; //hold mmu addr: 0x0
- p->mtlb_start = region_in_mmu_start >> 22;
- //end point next region start: +1; for remainder: +1
- p->stlb_end = prev_stlb = region_in_mmu_end >> 12 & 0x3FF;
- p->mtlb_end = prev_mtlb = region_in_mmu_end >> 22;
- p->page_count = page_count - 1; //hold mmu addr: 0x0
- break;
- case MMU_REGION_OUT:
- page_count = (REGION_OUT_END - REGION_OUT_START + 1)/PAGE_SIZE;
- p->stlb_start = region_out_mmu_start >> 12 & 0x3FF;
- p->mtlb_start = region_out_mmu_start >> 22;
- p->stlb_end = prev_stlb = region_out_mmu_end >> 12 & 0x3FF;
- p->mtlb_end = prev_mtlb = region_out_mmu_end >> 22;
- p->page_count = page_count;
- break;
- case MMU_REGION_PRIVATE:
- page_count = (REGION_PRIVATE_END - REGION_PRIVATE_START + 1)/PAGE_SIZE;
- p->stlb_start = region_private_mmu_start >> 12 & 0x3FF;
- p->mtlb_start = region_private_mmu_start >> 22;
- p->stlb_end = prev_stlb = region_private_mmu_end >> 12 & 0x3FF;
- p->mtlb_end = prev_mtlb = region_private_mmu_end >> 22;
- p->page_count = page_count;
- break;
- case MMU_REGION_PUB:
- p->stlb_start = prev_stlb;
- p->mtlb_start = prev_mtlb;
- p->stlb_end = prev_stlb = MMU_STLB_4K_ENTRY_NUM - 1;
- p->mtlb_end = prev_mtlb = MMU_MTLB_ENTRY_NUM - 1;
- p->page_count = (p->mtlb_end - p->mtlb_start) * MMU_STLB_4K_ENTRY_NUM +
- p->stlb_end - p->stlb_start + 1;
- break;
- default:
- pr_notice(" *****MMU Region Error*****\n");
- break;
- }
- p->process_id = 0;
- p->filp = NULL;
- p->next = p->prev = NULL;
- InsertNode(i, pp, 1);
- }
- return MMU_STATUS_OK;
- }
- /* A simpile function to check if the map buffer is existed.
- it needs more complex version*/
- static enum MMUStatus SMCheckAddress(enum MMURegion e,
- void *virtual_address) {
- struct MMUNode *p;
- p = g_mmu->region[e].simple_map_head->next;
- while(p) {
- if(p->buf_virtual_address == virtual_address) {
- return MMU_STATUS_FALSE;
- }
- p = p->next;
- }
- return MMU_STATUS_OK;
- }
- static enum MMUStatus FindFreeNode(enum MMURegion e,
- struct MMUNode **node,
- unsigned int page_count) {
- struct MMUNode *p;
- p = g_mmu->region[e].free_map_head->next;
- while(p) {
- if(p->page_count >= page_count) {
- *node = p;
- return MMU_STATUS_OK;
- }
- p = p->next;
- }
- return MMU_STATUS_FALSE;
- }
- static enum MMUStatus SplitFreeNode(enum MMURegion e,
- struct MMUNode **node,
- unsigned int page_count) {
- struct MMUNode *p, **new;
- p = kmalloc(sizeof(struct MMUNode), GFP_KERNEL | MMU_NOWARN);
- new = &p;
- **new = **node;
- (*new)->mtlb_start = (*node)->mtlb_start;
- (*new)->stlb_start = (*node)->stlb_start;
- (*new)->mtlb_end = (page_count + (*node)->stlb_start) /
- MMU_STLB_4K_ENTRY_NUM +
- (*node)->mtlb_start;
- (*new)->stlb_end = (page_count + (*node)->stlb_start) %
- MMU_STLB_4K_ENTRY_NUM;
- (*new)->process_id = (*node)->process_id;
- (*new)->page_count = page_count;
- MMUDEBUG(" *****new mtlb_start*****%d\n", (*new)->mtlb_start);
- MMUDEBUG(" *****new stlb_start*****%d\n", (*new)->stlb_start);
- MMUDEBUG(" *****new mtlb_end*****%d\n", (*new)->mtlb_end);
- MMUDEBUG(" *****new stlb_end*****%d\n", (*new)->stlb_end);
- /* Insert a new node in map */
- InsertNode(e, new, 0);
- /* Update free node in free map*/
- (*node)->page_count -= page_count;
- if((*node)->page_count == 0) {
- DeleteNode(node);
- MMUDEBUG(" *****old node deleted*****\n");
- } else {
- (*node)->mtlb_start = (*new)->mtlb_end;
- (*node)->stlb_start = (*new)->stlb_end;
- MMUDEBUG(" *****old mtlb_start*****%d\n", (*node)->mtlb_start);
- MMUDEBUG(" *****old stlb_start*****%d\n", (*node)->stlb_start);
- MMUDEBUG(" *****old mtlb_end*****%d\n", (*node)->mtlb_end);
- MMUDEBUG(" *****old stlb_end*****%d\n", (*node)->stlb_end);
- }
- /* return a new node for map buffer */
- *node = *new;
- return MMU_STATUS_OK;
- }
- static enum MMUStatus SMRemoveNode(enum MMURegion e,
- void *buf_virtual_address,
- unsigned int process_id) {
- struct MMUNode *p, **pp;
- p = g_mmu->region[e].simple_map_head->next;
- pp = &p;
- while(*pp) {
- if((*pp)->buf_virtual_address == buf_virtual_address &&
- (*pp)->process_id == process_id) {
- SMDeleteNode(pp);
- break;
- }
- *pp = (*pp)->next;
- }
- return MMU_STATUS_OK;
- }
- static enum MMUStatus RemoveNode(enum MMURegion e,
- void *buf_virtual_address,
- unsigned int process_id) {
- struct MMUNode *p, **pp;
- p = g_mmu->region[e].map_head->next;
- pp = &p;
- while(*pp) {
- if((*pp)->buf_virtual_address == buf_virtual_address &&
- (*pp)->process_id == process_id) {
- InsertNode(e, pp, 1);
- break;
- }
- *pp = (*pp)->next;
- }
- return MMU_STATUS_OK;
- }
- static enum MMUStatus SMRemoveKernelNode(enum MMURegion e,
- unsigned int buf_bus_address,
- unsigned int process_id) {
- struct MMUNode *p, **pp;
- p = g_mmu->region[e].simple_map_head->next;
- pp = &p;
- while(*pp) {
- if((*pp)->buf_bus_address == buf_bus_address &&
- (*pp)->process_id == process_id) {
- SMDeleteNode(pp);
- break;
- }
- *pp = (*pp)->next;
- }
- return MMU_STATUS_OK;
- }
- static enum MMUStatus RemoveKernelNode(enum MMURegion e,
- unsigned int buf_bus_address,
- unsigned int process_id) {
- struct MMUNode *p, **pp;
- p = g_mmu->region[e].map_head->next;
- pp = &p;
- while(*pp) {
- if((*pp)->buf_bus_address == buf_bus_address &&
- (*pp)->process_id == process_id) {
- InsertNode(e, pp, 1);
- break;
- }
- *pp = (*pp)->next;
- }
- return MMU_STATUS_OK;
- }
- static enum MMUStatus Delay(unsigned int delay) {
- if(delay > 0) {
- #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
- ktime_t dl = ktime_set((delay / MSEC_PER_SEC),
- (delay % MSEC_PER_SEC) * NSEC_PER_MSEC);
- __set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_hrtimeout(&dl, HRTIMER_MODE_REL);
- #else
- msleep(delay);
- #endif
- }
- return MMU_STATUS_OK;
- }
- static enum MMUStatus CreateMutex(void **mtx) {
- enum MMUStatus status;
- /* Allocate the mutex structure. */
- status = AllocateMemory(sizeof(struct mutex), mtx);
- if (MMU_IS_SUCCESS(status)) {
- /* Initialize the mutex. */
- mutex_init(*(struct mutex **)mtx);
- }
- return status;
- }
- static enum MMUStatus DeleteMutex(void *mtx) {
- /* Destroy the mutex. */
- mutex_destroy((struct mutex *)mtx);
- /* Free the mutex structure. */
- FreeMemory(mtx);
- return MMU_STATUS_OK;
- }
- static enum MMUStatus AcquireMutex(void *mtx, unsigned int timeout) {
- if (timeout == MMU_INFINITE)
- {
- /* Lock the mutex. */
- mutex_lock(mtx);
- /* Success. */
- return MMU_STATUS_OK;
- }
- for (;;) {
- /* Try to acquire the mutex. */
- if (mutex_trylock(mtx)) {
- /* Success. */
- return MMU_STATUS_OK;
- }
- if (timeout-- == 0) {
- break;
- }
- /* Wait for 1 millisecond. */
- Delay(1);
- }
- return MMU_STATUS_OK;
- }
- static enum MMUStatus ReleaseMutex(void *mtx) {
- /* Release the mutex. */
- mutex_unlock(mtx);
- return MMU_STATUS_OK;
- }
- static inline enum MMUStatus QueryProcessPageTable(void *logical,
- unsigned long long *address) {
- unsigned long lg = (unsigned long)logical;
- unsigned long offset = lg & ~PAGE_MASK;
- struct vm_area_struct *vma;
- spinlock_t *ptl;
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
- if (is_vmalloc_addr(logical)) {
- /* vmalloc area. */
- *address = page_to_phys(vmalloc_to_page(logical)) | offset;
- return MMU_STATUS_OK;
- } else if (virt_addr_valid(lg)) {
- /* Kernel logical address. */
- *address = virt_to_phys(logical);
- return MMU_STATUS_OK;
- } else {
- /* Try user VM area. */
- if (!current->mm)
- return MMU_STATUS_NOT_FOUND;
- #if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0)
- down_read(¤t->mm->mmap_lock);
- #else
- down_read(¤t->mm->mmap_sem);
- #endif
- vma = find_vma(current->mm, lg);
- #if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0)
- up_read(¤t->mm->mmap_lock);
- #else
- up_read(¤t->mm->mmap_sem);
- #endif
- /* To check if mapped to user. */
- if (!vma)
- return MMU_STATUS_NOT_FOUND;
- pgd = pgd_offset(current->mm, lg);
- if (pgd_none(*pgd) || pgd_bad(*pgd))
- return MMU_STATUS_NOT_FOUND;
- #if (defined(CONFIG_CPU_CSKYV2) || defined(CONFIG_X86)) \
- && LINUX_VERSION_CODE >= KERNEL_VERSION (4,12,0)
- pud = pud_offset((p4d_t*)pgd, lg);
- #elif (defined(CONFIG_CPU_CSKYV2)) \
- && LINUX_VERSION_CODE >= KERNEL_VERSION (4,11,0)
- pud = pud_offset((p4d_t*)pgd, lg);
- #else
- pud = pud_offset((p4d_t*)pgd, lg);
- #endif
- if (pud_none(*pud) || pud_bad(*pud))
- return MMU_STATUS_NOT_FOUND;
- pmd = pmd_offset(pud, lg);
- if (pmd_none(*pmd) || pmd_bad(*pmd))
- return MMU_STATUS_NOT_FOUND;
- pte = pte_offset_map_lock(current->mm, pmd, lg, &ptl);
- if (!pte) {
- spin_unlock(ptl);
- return MMU_STATUS_NOT_FOUND;
- }
- if (!pte_present(*pte)) {
- pte_unmap_unlock(pte, ptl);
- return MMU_STATUS_NOT_FOUND;
- }
- *address = (pte_pfn(*pte) << PAGE_SHIFT) | offset;
- pte_unmap_unlock(pte, ptl);
- *address -= gBaseDDRHw;
- //MMUDEBUG(" QueryProcessPageTable map: virt %p -> %p\n", logical, (void *)*address);
- return MMU_STATUS_OK;
- }
- }
- static inline int GetProcessID(void) {
- return current->tgid;
- }
- #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
- static inline int is_vmalloc_addr(void *addr) {
- unsigned long long addr = (unsigned long long)Addr;
- return addr >= VMALLOC_START && addr < VMALLOC_END;
- }
- #endif
- static enum MMUStatus GetPhysicalAddress(void *logical,
- unsigned long long *address) {
- enum MMUStatus status;
- status = QueryProcessPageTable(logical, address);
- return status;
- }
- static enum MMUStatus GetPageEntry(struct MMUNode *node,
- unsigned int **page_table_entry,
- unsigned int i) {
- int num = node->mtlb_start * MMU_STLB_4K_ENTRY_NUM +
- node->stlb_start + i;
- *page_table_entry = (unsigned int*)g_mmu->stlb_virtual + num;
- return MMU_STATUS_OK;
- }
- static enum MMUStatus SetupDynamicSpace(void) {
- int i;
- enum MMUStatus status;
- unsigned int stlb_entry;
- void *pointer;
- unsigned long long address;
- dma_addr_t dma_handle;
- unsigned int num_entries = MMU_MTLB_ENTRY_NUM;
- unsigned int *mtlb_virtual = (unsigned int *)g_mmu->mtlb_virtual;
- AcquireMutex(g_mmu->page_table_mutex, MMU_INFINITE);
- if(pcie) {
- pointer = ioremap(gBaseDDRHw+STLB_PCIE_START_ADDRESS, num_entries*MMU_STLB_4K_SIZE);
- g_mmu->stlb_virtual = pointer;
- MMUDEBUG(" *****stlb_virtual = %p**%d\n", pointer, num_entries*MMU_STLB_4K_SIZE);
- address = STLB_PCIE_START_ADDRESS;
- for(i = 0; i < num_entries; i++){
- stlb_entry = address
- /* 4KB page size */
- | (0 << 2)
- /* Ignore exception */
- | (0 << 1)
- /* Present */
- | (1 << 0);
- WritePageEntry(mtlb_virtual++, stlb_entry);
- address += MMU_STLB_4K_SIZE;
- }
- } else {
- g_mmu->stlb_virtual = (void *)((u64)(g_mmu->mtlb_virtual) + MMU_MTLB_SIZE);
- g_mmu->stlb_physical = address = g_mmu->mtlb_physical + MMU_MTLB_SIZE;
- g_mmu->stlb_size = num_entries * MMU_STLB_4K_SIZE;
- for(i = 0; i < num_entries; i++){
- stlb_entry = address
- /* 4KB page size */
- | (0 << 2)
- /* Ignore exception */
- | (0 << 1)
- /* Present */
- | (1 << 0);
- WritePageEntry(mtlb_virtual++, stlb_entry);
- address += MMU_STLB_4K_SIZE;
- }
- }
- ReleaseMutex(g_mmu->page_table_mutex);
- /* Initial map info. */
- if (simple_map)
- SMCreateNodes();
- else
- CreateNode();
- return MMU_STATUS_OK;
- onerror:
- /* Return status. */
- return status;
- }
- enum MMUStatus MMUInit(volatile unsigned char *hwregs) {
- enum MMUStatus status;
- unsigned i;
- int result;
- void *pointer;
- if (mmu_init == MMU_TRUE) {
- /* All mmu use common table and dev, just initial once*/
- pr_notice(" *****MMU Already Initialed*****\n");
- return MMU_STATUS_OK;
- }
- if(!hwregs || (ioread32((void*)(hwregs + MMU_REG_HW_ID))>>16) != 0x4D4D)
- return MMU_STATUS_NOT_FOUND;
- pr_notice(" *****MMU Init*****\n");
- platformdev = platform_device_register_full(&hantro_platform_info);
- if(platformdev == NULL) {
- pr_err("hantrodec create platform device fail\n");
- status = MMU_STATUS_FALSE;
- goto onerror;
- } else {
- pr_info("Create platform device success\n");
- }
- result = platform_driver_register(&hantro_drm_platform_driver);
- pr_notice("Platform driver status is %d\n", result);
- /* Allocate memory for the MMU object. */
- MMU_ON_ERROR(AllocateMemory(sizeof(struct MMU), &pointer));
- ZeroMemory(pointer, sizeof(struct MMU));
- g_mmu = pointer;
- g_mmu->page_table_mutex = NULL;
- /* Create the page table mutex. */
- MMU_ON_ERROR(CreateMutex(&g_mmu->page_table_mutex));
- for (i = 0; i < MMU_REGION_COUNT;i++) {
- MMU_ON_ERROR(CreateMutex(&g_mmu->region[i].node_mutex));
- }
- mmu_init = MMU_TRUE;
- return MMU_STATUS_OK;
- onerror:
- pr_notice(" *****MMU Init Error*****\n");
- return status;
- }
- enum MMUStatus MMURelease(void *filp, volatile unsigned char *hwregs) {
- int i, j;
- struct MMUNode *p, *tmp;
- unsigned long long address;
- unsigned int *page_table_entry;
- if(!hwregs || (ioread32((void*)(hwregs + MMU_REG_HW_ID))>>16) != 0x4D4D)
- return MMU_STATUS_FALSE;
- /* if mmu or TLB not enabled, return */
- if (simple_map) {
- if(g_mmu == NULL || g_mmu->region[0].simple_map_head == NULL)
- return MMU_STATUS_OK;
- } else {
- if(g_mmu == NULL || g_mmu->region[0].map_head == NULL)
- return MMU_STATUS_OK;
- }
- pr_notice(" *****MMU Release*****\n");
- AcquireMutex(g_mmu->page_table_mutex, MMU_INFINITE);
- if (simple_map) {
- for (i = 0; i < MMU_REGION_COUNT; i++) {
- p = g_mmu->region[i].simple_map_head->next;
- while(p) {
- tmp = p->next;
- if(p->filp == (struct file *)filp) {
- for(j = 0;j < p->page_count; j++) {
- GetPageEntry(p, &page_table_entry, j);
- address = 0;
- WritePageEntry(page_table_entry, address);
- }
- SMRemoveNode(i, p->buf_virtual_address, p->process_id);
- }
- p = tmp;
- }
- }
- } else {
- for (i = 0; i < MMU_REGION_COUNT; i++) {
- p = g_mmu->region[i].map_head->next;
- while(p) {
- tmp = p->next;
- if(p->filp == (struct file *)filp) {
- for(j = 0;j < p->page_count; j++) {
- GetPageEntry(p, &page_table_entry, j);
- address = 0;
- WritePageEntry(page_table_entry, address);
- }
- RemoveNode(i, p->buf_virtual_address, p->process_id);
- }
- p = tmp;
- }
- }
- }
- ReleaseMutex(g_mmu->page_table_mutex);
- return MMU_STATUS_OK;
- }
- enum MMUStatus MMUCleanup(volatile unsigned char *hwregs[MAX_SUBSYS_NUM][2]) {
- int i;
- struct MMUNode *p, *tmp;
- struct MMUNode *fp;
- for (i = 0; i < MAX_SUBSYS_NUM; i++) {
- if (hwregs[i][0] != NULL &&
- (ioread32((void*)(hwregs[i][0] + MMU_REG_HW_ID))>>16) != 0x4D4D)
- return MMU_STATUS_FALSE;
- if (hwregs[i][1] != NULL &&
- (ioread32((void*)(hwregs[i][1] + MMU_REG_HW_ID))>>16) != 0x4D4D)
- return MMU_STATUS_FALSE;
- }
- pr_info(" *****MMU cleanup*****\n");
- if (pcie) {
- if (g_mmu->stlb_virtual)
- iounmap(g_mmu->stlb_virtual);
- if (g_mmu->mtlb_virtual)
- iounmap(g_mmu->mtlb_virtual);
- if (g_mmu->page_table_array)
- iounmap(g_mmu->page_table_array);
- } else {
- /* stlb_virtual is same alloc on alloc mtlb_virtual in func MMUEnable()
- * so, should not free g_mmu->stlb_virtual.But free handle g_mmu->mtlb_physical
- * size should be ( g_mmu->mtlb_size+g_mmu->stlb_size)
- * */
- if (g_mmu->mtlb_virtual)
- dma_free_coherent(&platformdev->dev, g_mmu->mtlb_size+g_mmu->stlb_size,
- g_mmu->mtlb_virtual, (dma_addr_t)g_mmu->mtlb_physical);
- if (g_mmu->page_table_array)
- dma_free_coherent(&platformdev->dev, g_mmu->page_table_array_size,
- g_mmu->page_table_array, (dma_addr_t)g_mmu->page_table_array_physical);
- }
- DeleteMutex(g_mmu->page_table_mutex);
- for (i = 0; i < MMU_REGION_COUNT; i++) {
- DeleteMutex(g_mmu->region[i].node_mutex);
- if (simple_map) {
- p = g_mmu->region[i].simple_map_head;
- while(p) {
- tmp = p->next;
- FreeMemory(p);
- p = tmp;
- MMUDEBUG(" *****clean node*****\n");
- }
- } else {
- fp = g_mmu->region[i].free_map_head;
- p = g_mmu->region[i].map_head;
- while(fp) {
- tmp = fp->next;
- FreeMemory(fp);
- fp = tmp;
- MMUDEBUG(" *****clean free node*****\n");
- }
- while(p) {
- tmp = p->next;
- FreeMemory(p);
- p = tmp;
- MMUDEBUG(" *****clean node*****\n");
- }
- }
- }
- FreeMemory(g_mmu);
- platform_device_unregister(platformdev);
- platform_driver_unregister(&hantro_drm_platform_driver);
- pr_info("Unregister platform device.\n");
- for (i = 0; i < MAX_SUBSYS_NUM; i++) {
- if (hwregs[i][0] != NULL)
- iowrite32(0, (void*)(hwregs[i][0] + MMU_REG_CONTROL));
- if (hwregs[i][1] != NULL)
- iowrite32(0, (void*)(hwregs[i][1] + MMU_REG_CONTROL));
- }
- mmu_enable = 0;
- mmu_init = 0;
- return MMU_STATUS_OK;
- }
- /*------------------------------------------------------------------------------
- Function name: MMUEnable
- Description:
- Create TLB, set registers and enable MMU
- For pcie, TLB buffers come from FPGA memory and The distribution is as follows
- MTLB: start from: 0x00100000, size: 4K bits
- page table array: 0x00200000 64 bits
- STLB: 0x00300000 4M bits
- ------------------------------------------------------------------------------*/
- enum MMUStatus MMUEnable(volatile unsigned char *hwregs[MAX_SUBSYS_NUM][2]) {
- enum MMUStatus status;
- unsigned int address;
- unsigned int mutex = MMU_FALSE;
- dma_addr_t dma_handle;
- u32 i = 0;
- u32 address_ext;
- u32 total_table_size;
- if(mmu_enable == MMU_TRUE) {
- pr_info(" *****MMU Already Enabled*****\n");
- return MMU_STATUS_OK;
- }
- pr_info(" *****MMU Enable...*****\n");
- AcquireMutex(g_mmu->page_table_mutex, MMU_INFINITE);
- mutex = MMU_TRUE;
- if(pcie) {
- g_mmu->mtlb_size = MMU_MTLB_SIZE;
- g_mmu->mtlb_virtual = ioremap(gBaseDDRHw+MTLB_PCIE_START_ADDRESS, g_mmu->mtlb_size);
- MMUDEBUG("gBaseDDRHw=0x%llx, g_mmu->mtlb_virtual=0x%llx\n", gBaseDDRHw, g_mmu->mtlb_virtual);
- g_mmu->mtlb_physical = MTLB_PCIE_START_ADDRESS;
- g_mmu->page_table_array = ioremap(gBaseDDRHw+PAGE_PCIE_START_ADDRESS, PAGE_TABLE_ENTRY_SIZE);
- } else {
- /* Allocate the 4K mode MTLB table. */
- total_table_size = MMU_MTLB_SIZE + MMU_MTLB_ENTRY_NUM*MMU_STLB_4K_SIZE;
- g_mmu->mtlb_size = MMU_MTLB_SIZE;
- g_mmu->mtlb_virtual = dma_alloc_coherent(&platformdev->dev, total_table_size,
- &dma_handle, GFP_KERNEL | GFP_DMA);
- MMUDEBUG(" *****g_mmu->mtlb_virtual = 0x%llx\n", g_mmu->mtlb_virtual);
- g_mmu->mtlb_physical = (unsigned long long)dma_handle;
- MMUDEBUG(" *****mtlb_physical = 0x%llx\n", (unsigned int)g_mmu->mtlb_physical);
- if(g_mmu->mtlb_virtual == NULL) {
- pr_err("hantrodec alloc buffer fail\n");
- status = MMU_STATUS_FALSE;
- goto onerror;
- }
- g_mmu->page_table_array_size = PAGE_TABLE_ENTRY_SIZE;
- g_mmu->page_table_array = dma_alloc_coherent(&platformdev->dev, g_mmu->page_table_array_size,
- &dma_handle, GFP_KERNEL | GFP_DMA);
- MMUDEBUG(" *****g_mmu->page_table_array = 0x%llx\n", g_mmu->page_table_array);
- g_mmu->page_table_array_physical = (unsigned long long)dma_handle;
- MMUDEBUG(" *****page_table_array_physical = 0x%llx\n", (unsigned int)g_mmu->page_table_array_physical);
- if(g_mmu->page_table_array == NULL) {
- pr_err("hantrodec alloc buffer fail\n");
- status = MMU_STATUS_FALSE;
- goto onerror;
- }
- }
- *((unsigned int*)g_mmu->page_table_array) =
- (g_mmu->mtlb_physical & 0xFFFFFC00) | (0 << 0);
- *((unsigned int *)g_mmu->page_table_array+1) =
- (u32)(g_mmu->mtlb_physical >> 32)&0xff;
- *((unsigned int *)g_mmu->page_table_array+2) =
- (g_mmu->mtlb_physical & 0xFFFFFC00) | (0 << 0);
- *((unsigned int *)g_mmu->page_table_array+3) =
- (u32)(g_mmu->mtlb_physical >> 32)&0xff;
- MMUDEBUG(" Page table array[0]: lsb = 0x%08x\n", ((int *)g_mmu->page_table_array)[0]);
- MMUDEBUG(" msb = 0x%08x\n", ((int *)g_mmu->page_table_array)[1]);
- ZeroMemory(g_mmu->mtlb_virtual, total_table_size);
- ReleaseMutex(g_mmu->page_table_mutex);
- MMU_ON_ERROR(SetupDynamicSpace());
- if(pcie) {
- address = PAGE_PCIE_START_ADDRESS;
- } else {
- address = g_mmu->page_table_array_physical;
- address_ext = ((u32)(g_mmu->page_table_array_physical >> 32))&0xff;
- }
- #ifndef HANTROVCMD_ENABLE_IP_SUPPORT
- /* set regs of all MMUs */
- for (i = 0; i < MAX_SUBSYS_NUM; i++) {
- if (hwregs[i][0] != NULL) {
- MMUDEBUG("hwregs[%d][0]=%p, id=0x%08x", i, hwregs[i][0], ioread32((void*)hwregs[i][0] + MMU_REG_HW_ID));
- iowrite32(address, (void*)(hwregs[i][0] + MMU_REG_ADDRESS));
- iowrite32(address_ext, (void *)(hwregs[i][0] + MMU_REG_ADDRESS_MSB));
-
- iowrite32(0x10000, (void*)(hwregs[i][0] + MMU_REG_PAGE_TABLE_ID));
- iowrite32(0x00000, (void*)(hwregs[i][0] + MMU_REG_PAGE_TABLE_ID));
- iowrite32(1, (void*)(hwregs[i][0] + MMU_REG_CONTROL));
- }
- if (hwregs[i][1] != NULL) {
- MMUDEBUG("hwregs[%d][1]=%p, id=0x%08x", i, hwregs[i][1], ioread32((void*)hwregs[i][1] + MMU_REG_HW_ID));
- iowrite32(address, (void*)(hwregs[i][1] + MMU_REG_ADDRESS));
- iowrite32(address_ext, (void *)(hwregs[i][1] + MMU_REG_ADDRESS_MSB));
- iowrite32(0x10000, (void*)(hwregs[i][1] + MMU_REG_PAGE_TABLE_ID));
- iowrite32(0x00000, (void*)(hwregs[i][1] + MMU_REG_PAGE_TABLE_ID));
- iowrite32(1, (void*)(hwregs[i][1] + MMU_REG_CONTROL));
- }
- }
- #endif
- mmu_enable = MMU_TRUE;
- return MMU_STATUS_OK;
- onerror:
- if (mutex) {
- ReleaseMutex(g_mmu->page_table_mutex);
- }
- MMUDEBUG(" *****MMU Enable Error*****\n");
- return status;
- }
- /*------------------------------------------------------------------------------
- Function name: MMUFlush
- Description:
- Flush MMU reg to update cache in MMU.
- ------------------------------------------------------------------------------*/
- static enum MMUStatus MMUFlush(u32 core_id, volatile unsigned char *hwregs[MAX_SUBSYS_NUM][2]) {
- enum MMUStatus status;
- unsigned int mutex = MMU_FALSE;
- MMUDEBUG(" *****MMU Flush*****\n");
- AcquireMutex(g_mmu->page_table_mutex, MMU_INFINITE);
- mutex = MMU_TRUE;
- if (hwregs[core_id][0] != NULL) {
- iowrite32(0x10, (void*)(hwregs[core_id][0] + MMU_REG_FLUSH));
- iowrite32(0x00, (void*)(hwregs[core_id][0] + MMU_REG_FLUSH));
- } else {
- pr_err("hantrodec alloc buffer fail\n");
- status = MMU_STATUS_FALSE;
- goto onerror;
- }
- if (hwregs[core_id][1] != NULL) {
- iowrite32(0x10, (void*)(hwregs[core_id][1] + MMU_REG_FLUSH));
- iowrite32(0x00, (void*)(hwregs[core_id][1] + MMU_REG_FLUSH));
- }
- ReleaseMutex(g_mmu->page_table_mutex);
- return MMU_STATUS_OK;
- onerror:
- if (mutex) {
- ReleaseMutex(g_mmu->page_table_mutex);
- }
- MMUDEBUG(" *****MMU Flush Error*****\n");
- return status;
- }
- static enum MMUStatus MMUMemNodeMap(struct addr_desc *addr, struct file *filp) {
- enum MMUStatus status;
- unsigned int page_count = 0;
- unsigned int i = 0;
- struct MMUNode *p;
- unsigned long long address = 0x0;
- unsigned int *page_table_entry;
- enum MMURegion e;
- unsigned int mutex = MMU_FALSE;
- u32 ext_addr;
- MMUDEBUG(" *****MMU Map*****\n");
- AcquireMutex(g_mmu->page_table_mutex, MMU_INFINITE);
- mutex = MMU_TRUE;
- page_count = (addr->size - 1)/PAGE_SIZE + 1;
- GetPhysicalAddress(addr->virtual_address, &address);
- MMUDEBUG(" *****MMU map address*****%x\n", address);
- if(address >= REGION_IN_START &&
- address + addr->size < REGION_IN_END)
- e = MMU_REGION_IN;
- else if(address >= REGION_OUT_START &&
- address + addr->size < REGION_OUT_END)
- e = MMU_REGION_OUT;
- else if(address >= REGION_PRIVATE_START &&
- address + addr->size < REGION_PRIVATE_END)
- e = MMU_REGION_PRIVATE;
- else
- e = MMU_REGION_PUB;
- if (simple_map) {
- MMU_ON_ERROR(SMCheckAddress(e, addr->virtual_address));
- SMCreateNode(e, &p, page_count);
- MMUDEBUG(" *****Node map size*****%d\n", page_count);
- p->buf_virtual_address = addr->virtual_address;
- p->process_id = GetProcessID();
- p->filp = filp;
- p->mtlb_start = ((address + map_shift) >> MMU_MTLB_SHIFT);
- p->stlb_start = ((address + map_shift) >> MMU_STLB_4K_SHIFT ) & 0x3FF;
- p->mtlb_end = (page_count + p->stlb_start) / MMU_STLB_4K_ENTRY_NUM +
- p->mtlb_start;
- p->stlb_end = (page_count + p->stlb_start) % MMU_STLB_4K_ENTRY_NUM;
- p->page_count = page_count;
- for(i = 0;i < page_count; i++) {
- GetPhysicalAddress(addr->virtual_address + i * PAGE_SIZE, &address);
- GetPageEntry(p, &page_table_entry, i);
- ext_addr = ((u32)(address>>32))&0xff;
- address = (address & 0xFFFFF000)
- /* ext address , physical address bits [39,32]*/
- | (ext_addr << 4)
- /* writable */
- | (1 << 2)
- /* Ignore exception */
- | (0 << 1)
- /* Present */
- | (1 << 0);
- WritePageEntry(page_table_entry, address);
- }
- /* Purpose of Bare_metal mode: input bus address==mmu address*/
- addr->bus_address = p->mtlb_start << MMU_MTLB_SHIFT
- | p->stlb_start << MMU_STLB_4K_SHIFT;
- } else {
- MMU_ON_ERROR(FindFreeNode(e, &p, page_count));
- SplitFreeNode(e, &p, page_count);
- MMUDEBUG(" *****Node map size*****%d\n", p->page_count);
- p->buf_virtual_address = addr->virtual_address;
- p->process_id = GetProcessID();
- p->filp = filp;
- for(i = 0;i < page_count; i++) {
- GetPhysicalAddress(addr->virtual_address + i * PAGE_SIZE, &address);
- GetPageEntry(p, &page_table_entry, i);
- ext_addr = ((u32)(address>>32))&0xff;
- address = (address & 0xFFFFF000)
- /* ext address , physical address bits [39,32]*/
- | (ext_addr << 4)
- /* writable */
- | (1 << 2)
- /* Ignore exception */
- | (0 << 1)
- /* Present */
- | (1 << 0);
- WritePageEntry(page_table_entry, address);
- }
- addr->bus_address = p->mtlb_start << MMU_MTLB_SHIFT
- | p->stlb_start << MMU_STLB_4K_SHIFT;
- }
- MMUDEBUG(" MMU_MTLB_SHIFT %d MMU_STLB_4K_SHIFT %d\n", MMU_MTLB_SHIFT, MMU_STLB_4K_SHIFT);
- MMUDEBUG(" MMUMemNodeMap map total %d pages in region %d\nMTLB/STLB starts %d/%d, MTLB/STLB ends %d/%d\n",
- page_count, (u32)e, p->mtlb_start, p->stlb_start, p->mtlb_end, p->stlb_end);
- MMUDEBUG(" MMUMemNodeMap map %p -> 0x%08x\n", addr->virtual_address, addr->bus_address);
- ReleaseMutex(g_mmu->page_table_mutex);
- return MMU_STATUS_OK;
- onerror:
- if (mutex) {
- ReleaseMutex(g_mmu->page_table_mutex);
- }
- MMUDEBUG(" *****MMU Map Error*****\n");
- return status;
- }
- static enum MMUStatus MMUMemNodeUnmap(struct addr_desc *addr) {
- unsigned int i;
- unsigned long long address = 0x0;
- unsigned int *page_table_entry;
- int process_id = GetProcessID();
- enum MMURegion e = MMU_REGION_COUNT;
- enum MMUStatus status = MMU_STATUS_OUT_OF_MEMORY;
- struct MMUNode *p;
- unsigned int mutex = MMU_FALSE;
- MMUDEBUG(" *****MMU Unmap*****\n");
- AcquireMutex(g_mmu->page_table_mutex, MMU_INFINITE);
- mutex = MMU_TRUE;
- GetPhysicalAddress(addr->virtual_address, &address);
- if(address >= REGION_IN_START &&
- address < REGION_IN_END)
- e = MMU_REGION_IN;
- else if(address >= REGION_OUT_START &&
- address < REGION_OUT_END)
- e = MMU_REGION_OUT;
- else if(address >= REGION_PRIVATE_START &&
- address < REGION_PRIVATE_END)
- e = MMU_REGION_PRIVATE;
- else
- e = MMU_REGION_PUB;
- if (simple_map)
- p = g_mmu->region[e].simple_map_head->next;
- else
- p = g_mmu->region[e].map_head->next;
- /* Reset STLB of the node */
- while(p) {
- if(p->buf_virtual_address == addr->virtual_address &&
- p->process_id == process_id) {
- for(i = 0;i < p->page_count; i++) {
- GetPageEntry(p, &page_table_entry, i);
- address = 0;
- WritePageEntry(page_table_entry, address);
- }
- break;
- }
- p = p->next;
- }
- if(!p)
- goto onerror;
- if (simple_map)
- SMRemoveNode(e, addr->virtual_address, process_id);
- else
- RemoveNode(e, addr->virtual_address, process_id);
- ReleaseMutex(g_mmu->page_table_mutex);
- return MMU_STATUS_OK;
- onerror:
- if (mutex) {
- ReleaseMutex(g_mmu->page_table_mutex);
- }
- MMUDEBUG(" *****MMU Unmap Error*****\n");
- return status;
- }
- enum MMUStatus MMUKernelMemNodeMap(struct kernel_addr_desc *addr) {
- enum MMUStatus status;
- unsigned int page_count = 0;
- unsigned int i = 0;
- struct MMUNode *p;
- unsigned long long address = 0x0;
- unsigned int *page_table_entry;
- enum MMURegion e;
- unsigned int mutex = MMU_FALSE;
- u32 ext_addr;
- u32 page_entry_value = 0;
- MMUDEBUG(" *****MMU Map*****\n");
- AcquireMutex(g_mmu->page_table_mutex, MMU_INFINITE);
- mutex = MMU_TRUE;
- page_count = (addr->size - 1)/PAGE_SIZE + 1;
- address = addr->bus_address;
- MMUDEBUG(" *****MMU map address*****%x\n", address);
- if(address >= REGION_IN_START &&
- address + addr->size < REGION_IN_END)
- e = MMU_REGION_IN;
- else if(address >= REGION_OUT_START &&
- address + addr->size < REGION_OUT_END)
- e = MMU_REGION_OUT;
- else if(address >= REGION_PRIVATE_START &&
- address + addr->size < REGION_PRIVATE_END)
- e = MMU_REGION_PRIVATE;
- else
- e = MMU_REGION_PUB;
- if (simple_map) {
- //TODO: should check bus addr
- //MMU_ON_ERROR(SMCheckAddress(e, addr->virtual_address));
- SMCreateNode(e, &p, page_count);
- MMUDEBUG(" *****Node map size*****%d\n", page_count);
- p->buf_bus_address = addr->bus_address;
- p->process_id = GetProcessID();
- p->filp = NULL;
- p->mtlb_start = ((address + map_shift) >> MMU_MTLB_SHIFT);
- p->stlb_start = ((address + map_shift) >> MMU_STLB_4K_SHIFT ) & 0x3FF;
- p->mtlb_end = (page_count + p->stlb_start) / MMU_STLB_4K_ENTRY_NUM +
- p->mtlb_start;
- p->stlb_end = (page_count + p->stlb_start) % MMU_STLB_4K_ENTRY_NUM;
- p->page_count = page_count;
- for(i = 0;i < page_count; i++) {
- /* this function used in kernel only, so we think it's a contunuous buffer*/
- address += (i ? PAGE_SIZE : 0);
- GetPageEntry(p, &page_table_entry, i);
- ext_addr = ((u32)(address>>32))&0xff;
- page_entry_value = (address & 0xFFFFF000)
- /* ext address , physical address bits [39,32]*/
- | (ext_addr << 4)
- /* writable */
- | (1 << 2)
- /* Ignore exception */
- | (0 << 1)
- /* Present */
- | (1 << 0);
- WritePageEntry(page_table_entry, page_entry_value);
- }
- /* Purpose of Bare_metal mode: input bus address==mmu address*/
- addr->mmu_bus_address = p->mtlb_start << MMU_MTLB_SHIFT
- | p->stlb_start << MMU_STLB_4K_SHIFT;
- } else {
- MMU_ON_ERROR(FindFreeNode(e, &p, page_count));
- SplitFreeNode(e, &p, page_count);
- MMUDEBUG(" *****Node map size*****%d\n", p->page_count);
- p->buf_bus_address = addr->bus_address;
- p->process_id = GetProcessID();
- p->filp = NULL;
- for(i = 0;i < page_count; i++) {
- /* this function used in kernel only, so we think it's a contunuous buffer*/
- address += (i ? PAGE_SIZE : 0);
- GetPageEntry(p, &page_table_entry, i);
- ext_addr = ((u32)(address>>32))&0xff;
- page_entry_value = (address & 0xFFFFF000)
- /* ext address , physical address bits [39,32]*/
- | (ext_addr << 4)
- /* writable */
- | (1 << 2)
- /* Ignore exception */
- | (0 << 1)
- /* Present */
- | (1 << 0);
- WritePageEntry(page_table_entry, page_entry_value);
- }
- addr->mmu_bus_address = p->mtlb_start << MMU_MTLB_SHIFT
- | p->stlb_start << MMU_STLB_4K_SHIFT;
- }
- MMUDEBUG(" KERNEL MMU_MTLB_SHIFT %d MMU_STLB_4K_SHIFT %d\n", MMU_MTLB_SHIFT, MMU_STLB_4K_SHIFT);
- MMUDEBUG(" MMUKernelMemNodeMap map total %d pages in region %d\nMTLB/STLB starts %d/%d, MTLB/STLB ends %d/%d\n",
- page_count, (u32)e, p->mtlb_start, p->stlb_start, p->mtlb_end, p->stlb_end);
- MMUDEBUG(" MMUKernelMemNodeMap map 0x%llx -> 0x%08x\n", addr->bus_address, addr->mmu_bus_address);
- ReleaseMutex(g_mmu->page_table_mutex);
- return MMU_STATUS_OK;
- onerror:
- if (mutex) {
- ReleaseMutex(g_mmu->page_table_mutex);
- }
- MMUDEBUG(" *****MMU Map Error*****\n");
- return status;
- }
- enum MMUStatus MMUKernelMemNodeUnmap(struct kernel_addr_desc *addr) {
- unsigned int i;
- unsigned long long address = 0x0;
- unsigned int *page_table_entry;
- int process_id = GetProcessID();
- enum MMURegion e = MMU_REGION_COUNT;
- enum MMUStatus status = MMU_STATUS_OUT_OF_MEMORY;
- struct MMUNode *p;
- unsigned int mutex = MMU_FALSE;
- MMUDEBUG(" *****MMU Unmap*****\n");
- AcquireMutex(g_mmu->page_table_mutex, MMU_INFINITE);
- mutex = MMU_TRUE;
- address = addr->bus_address;
- if(address >= REGION_IN_START &&
- address < REGION_IN_END)
- e = MMU_REGION_IN;
- else if(address >= REGION_OUT_START &&
- address < REGION_OUT_END)
- e = MMU_REGION_OUT;
- else if(address >= REGION_PRIVATE_START &&
- address < REGION_PRIVATE_END)
- e = MMU_REGION_PRIVATE;
- else
- e = MMU_REGION_PUB;
- if (simple_map)
- p = g_mmu->region[e].simple_map_head->next;
- else
- p = g_mmu->region[e].map_head->next;
- /* Reset STLB of the node */
- while(p) {
- if(p->buf_bus_address == addr->bus_address &&
- p->process_id == process_id) {
- for(i = 0;i < p->page_count; i++) {
- GetPageEntry(p, &page_table_entry, i);
- address = 0;
- WritePageEntry(page_table_entry, address);
- }
- break;
- }
- p = p->next;
- }
- if(!p)
- goto onerror;
- if (simple_map)
- SMRemoveKernelNode(e, addr->bus_address, process_id);
- else
- RemoveKernelNode(e, addr->bus_address, process_id);
- ReleaseMutex(g_mmu->page_table_mutex);
- return MMU_STATUS_OK;
- onerror:
- if (mutex) {
- ReleaseMutex(g_mmu->page_table_mutex);
- }
- MMUDEBUG(" *****MMU Unmap Error*****\n");
- return status;
- }
- static long MMUCtlBufferMap(struct file *filp, unsigned long arg) {
- struct addr_desc addr;
- long tmp;
- tmp = copy_from_user(&addr, (void*)arg, sizeof(struct addr_desc));
- if (tmp) {
- MMUDEBUG("copy_from_user failed, returned %li\n", tmp);
- return -MMU_EFAULT;
- }
- MMUMemNodeMap(&addr, filp);
- tmp = copy_to_user((void*) arg, &addr, sizeof(struct addr_desc));
- if (tmp) {
- MMUDEBUG("copy_to_user failed, returned %li\n", tmp);
- return -MMU_EFAULT;
- }
- return 0;
- }
- static long MMUCtlBufferUnmap(unsigned long arg) {
- struct addr_desc addr;
- long tmp;
- tmp = copy_from_user(&addr, (void*)arg, sizeof(struct addr_desc));
- if (tmp) {
- MMUDEBUG("copy_from_user failed, returned %li\n", tmp);
- return -MMU_EFAULT;
- }
- MMUMemNodeUnmap(&addr);
- return 0;
- }
- static long MMUCtlEnable(unsigned long arg, volatile unsigned char *hwregs[HXDEC_MAX_CORES][2]) {
- unsigned int enable;
- long tmp;
- tmp = copy_from_user(&enable, (void*)arg, sizeof(unsigned int));
- if (tmp) {
- MMUDEBUG("copy_from_user failed, returned %li\n", tmp);
- return -MMU_EFAULT;
- }
- MMUEnable(hwregs);
- return 0;
- }
- static long MMUCtlFlush(unsigned long arg, volatile unsigned char *hwregs[HXDEC_MAX_CORES][2]) {
- unsigned int core_id;
- long tmp;
- tmp = copy_from_user(&core_id, (void*)arg, sizeof(unsigned int));
- if (tmp) {
- MMUDEBUG("copy_from_user failed, returned %li\n", tmp);
- return -MMU_EFAULT;
- }
- MMUFlush(core_id, hwregs);
- return 0;
- }
- long MMUIoctl(unsigned int cmd, void *filp, unsigned long arg,
- volatile unsigned char *hwregs[HXDEC_MAX_CORES][2]) {
- u32 i = 0;
- for (i = 0; i < MAX_SUBSYS_NUM; i++) {
- if (hwregs[i][0] != NULL &&
- (ioread32((void*)(hwregs[i][0] + MMU_REG_HW_ID))>>16) != 0x4D4D)
- return -MMU_ENOTTY;
- if (hwregs[i][1] != NULL &&
- (ioread32((void*)(hwregs[i][1] + MMU_REG_HW_ID))>>16) != 0x4D4D)
- return -MMU_ENOTTY;
- MMUDEBUG("mmu_hwregs[%d][0].mmu_hwregs[0]=%p", i, hwregs[i][0]);
- MMUDEBUG("mmu_hwregs[%d][1].mmu_hwregs[0]=%p", i, hwregs[i][1]);
- }
- switch (cmd) {
- case HANTRO_IOCS_MMU_MEM_MAP: {
- return (MMUCtlBufferMap((struct file *)filp, arg));
- }
- case HANTRO_IOCS_MMU_MEM_UNMAP: {
- return (MMUCtlBufferUnmap(arg));
- }
- case HANTRO_IOCS_MMU_ENABLE: {
- return (MMUCtlEnable(arg, hwregs));
- }
- case HANTRO_IOCS_MMU_FLUSH: {
- return (MMUCtlFlush(arg, hwregs));
- }
- default:
- return -MMU_ENOTTY;
- }
- }
- unsigned long long GetMMUAddress(void)
- {
- unsigned long long address = 0;
- if(pcie)
- address = PAGE_PCIE_START_ADDRESS;
- else
- address = g_mmu->page_table_array_physical;
-
- return address;
- }
- void MMURestore(volatile unsigned char *hwregs[MAX_SUBSYS_NUM][2])
- {
- if (g_mmu == NULL)
- return;
- int i;
- unsigned int address;
- u32 address_ext;
- address = g_mmu->page_table_array_physical;
- address_ext = ((u32)(g_mmu->page_table_array_physical >> 32))&0xff;
- for (i = 0; i < MAX_SUBSYS_NUM; i++) {
- if (hwregs[i][0] != NULL) {
- iowrite32(address, (void*)(hwregs[i][0] + MMU_REG_ADDRESS));
- iowrite32(address_ext, (void *)(hwregs[i][0] + MMU_REG_ADDRESS_MSB));
- iowrite32(0x10000, (void*)(hwregs[i][0] + MMU_REG_PAGE_TABLE_ID));
- iowrite32(0x00000, (void*)(hwregs[i][0] + MMU_REG_PAGE_TABLE_ID));
- iowrite32(1, (void*)(hwregs[i][0] + MMU_REG_CONTROL));
- }
- if (hwregs[i][1] != NULL) {
- iowrite32(address, (void*)(hwregs[i][1] + MMU_REG_ADDRESS));
- iowrite32(address_ext, (void *)(hwregs[i][1] + MMU_REG_ADDRESS_MSB));
- iowrite32(0x10000, (void*)(hwregs[i][1] + MMU_REG_PAGE_TABLE_ID));
- iowrite32(0x00000, (void*)(hwregs[i][1] + MMU_REG_PAGE_TABLE_ID));
- iowrite32(1, (void*)(hwregs[i][1] + MMU_REG_CONTROL));
- }
- }
- }
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